<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <script type="text/javascript">
            for(var i =100;i>=5;i = i-5){
                document.write(i+"<br/>");
            }
        </script>
    </body>
</html>